low-growing annual herb of southwestern United States (Texas) having silky foliage and blue flowers; a leading cause of livestock poisoning in the southwestern United States
a brimless dark blue Scottish cap with a flat top and a plume on one side
双语例句
1. The red and white striped tail on this C-47 Skytrain called "Bluebonnet Belle" is typical of pre-war color schemes, when high visibility arrangements dominated.
2. The red and white striped tail on this C-47 Skytrain called "Bluebonnet Belle" is typical of pre-war color schemes, when high visibility arrangements dominated.
